Hi, I have a pair of drag radials on the back of my Mustang, which I only expected to last for 10K miles or so. Now that they have lost most of their tread, I’m noticing traction during launch is starting to worsen. Why is this happening? Less tread should mean more rubber on the road, right? My plan was to stay out of the rain and drive them til they’re bald, but it’s as though the remaining rubber isn’t as good as what I burned through for some reason.